App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 657 · 40 questions

Developer's tip (Think like the user): First decide which topic the question is about. Use that lesson’s rule: 48 px buttons, 16 px text, the screen stack, the flow order. For code, count positions from 0.

1. 1.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Offers → Size → Shop → Confirm → Menu
   Design B: Home → Results → Item (a) Design A (b) Design B
2. 2.Which of these is true of a tab bar? (a) opens a list of pages (b) goes to the last screen (c) undoes one move (d) sits at the bottom
3. 3.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Friend list”
   2. open “Video”
   3. tap the Profile tab
   4. open “Match report”
   5. tap Back
   Which screen are you on now? (a) Match report (b) Profile (c) Friend list (d) Video
4. 4.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Next button: 64 px tall
   Send button: 60 px tall
   Back button: 52 px tall
5. 5.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) take the photo (b) write a caption (c) add a filter (d) post the photo
6. 6.🔀 What is a user flow? (a) a type of font (b) the path through screens (c) a colour theme (d) a charging cable
7. 7.Which of these is about UI (the look)? (a) how fast a task is done (b) how easy sign-up is (c) the icon shapes (d) whether users get lost
8. 8.💾 What number does this code show?
   let notes = ["Hindi", "Music", "Maths", "Art"];
   notes.push("Science");
   notes.push("Sports");
   show(notes.length);
9. 9.Which of these is true of a final design? (a) shows where things go (b) uses plain grey boxes (c) has the real colours (d) is a quick sketch
10. 10.Which of these fits saving in the cloud? (a) notes to read offline (b) chat messages to friends (c) your last game level (d) the sound on/off setting
11. 11.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a final design (b) a wireframe
12. 12.Which of these is about UI (the look)? (a) how many taps it takes (b) how fast a task is done (c) the theme colours (d) how users feel after
13. 13.🧭 Where is a tab bar usually placed in a phone app? (a) nowhere (b) inside a button (c) in the middle (d) at the bottom
14. 14.True or false: buttons almost touching is good button design. (a) True (b) False
15. 15.Which of these is true of a wireframe? (a) uses plain grey boxes (b) looks like the real app (c) uses the final pictures (d) has the real colours
16. 16.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) post the photo (b) take the photo
17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 56 px tall
    Send button: 24 px tall
    Next button: 64 px tall
    Back button: 48 px tall (a) Send (b) Back (c) Start (d) Next
18. 18.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap Back
    3. open “Friend list”
    Which screen are you on now? (a) Friend list (b) Feed (c) Map (d) Chat
19. 19.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
20. 20.💾 What number does this code show?
    let stars = 7;
    stars = stars - 7;
    stars = stars + 2;
    show(stars);
21. 21.True or false: a clear word like Save is good button design. (a) False (b) True
22. 22.🔢 In a food-order flow, which comes first: “open the menu” or “pick a dish”? (a) pick a dish (b) open the menu
23. 23.🔢 In a food-order flow, what comes right after “check the cart”? (a) open the menu (b) pay for the order (c) pick a dish (d) add it to the cart
24. 24.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. open “Match report”
    3. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
25. 25.💾 What does this code show? (Positions start at 0.)
    let friends = ["Meera", "Arjun", "Kabir", "Zoya", "Aman"];
    show(friends[3]); (a) Arjun (b) Kabir (c) Meera (d) Zoya
26. 26.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “type name and email”? (a) tap “Sign up” (b) type name and email
27. 27.Which of these is about UI (the look)? (a) how easy sign-up is (b) how users feel after (c) whether users get lost (d) the font size
28. 28.Which of these is about UX (the experience)? (a) the theme colours (b) the button colours (c) the font size (d) how easy sign-up is
29. 29.🧭 Which part of navigation undoes one move? (a) a tab bar (b) a menu button (c) the back button
30. 30.Which of these helps everyone use the app? (a) strong colour contrast (b) icons with no labels (c) fast-flashing lights (d) sudden loud sounds
31. 31.🔍 Which is the odd one out? (a) the font size (b) whether users get lost (c) how fast a task is done (d) how users feel after
32. 32.🔢 In a photo-post flow, which comes FIRST? (a) add a filter (b) take the photo (c) write a caption (d) open the camera screen
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 19 px
    Title: 14 px
    Label: 19 px
34. 34.Which colour pair is easy to read? (a) dark blue on black (b) yellow on white (c) black on pale grey (d) red on green
35. 35.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Match report”
    2. tap Back
    3. open “Map”
    4. open “Badges”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
36. 36.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
37. 37.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap the Quiz tab
    3. open “Match report”
    4. tap Back
    5. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
38. 38.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
39. 39.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) pick an answer (b) see the final score (c) see if it is right (d) read a question
40. 40.True or false: a final design uses plain grey boxes. (a) True (b) False

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students